We use cookies to give you the best possible experience on our website. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them.

Boat

Have Boat Questions? Ask a Boat Repair Expert.

Connect one-on-one with {0} who will answer your question

By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them.

I have twin 454 engines on my 3670 1989 Cruiser esprit. I am…

Customer Question

I have twin 454...

I have twin 454 engines on my 3670 1989 Cruiser esprit. I am replacing the alternators. One of the alternators has 105 amp and 3 wires black red and yellow. The other alternator is only 51 amps and has only two wires red and yellow i thought they woud be the same.

Mechanic's Assistant: Sometimes things that you think will be really complicated end up being easy to fix. The Marine Mechanic I'm going to connect you with knows all the tricks and shortcuts. Is there anything else the Marine Mechanic should be aware of?

I have ignition wired up right but not sure bout how solenoid is wired 2 yellow and red from neutral switch on small posts cant see how you can get power to it wired that way. Was like that when i acq… read more

I have a 1988 Searay Sundancer with a 454 Mercruiser engine. I had to replace the alternator. The alternator was the old style with 3 wires, it was replaced with the new style one post to connect to. … read more

I have twin Perkins Diesels installed on my Silverton AC MotorYacht. They are 1982 vintage (I think) T6.354M/160HP six cylinder Turbo diesels. Serial Number of one of them is TU70062U647225-H45185. Ca… read more

I have a 1989 Harris Deck boat with a 4.3 Liter v6 engine and OMC sterndrive. I need to replace the starter solenoid and even though I took a few pictures of the wiring for it before I started working… read more

I am working on a 1989 bay liner Capri with a 3.0 mercruiser . I have done a considerable amount of work to it. Long story short, I was putting everything back together and greeting ready to get tdc o… read more

I just installed new bilge pumps and foat swiches in my 99 sea ray 280 with twin 350s. The hatch ram had to be moved to install pumps. When I put the ram back it does not work. I have power out of the… read more

One of my two twin 2004 SeaDoo GTX 4-TEC skis has a starting problem. When cold, it will start, but only after the initial crank doesn't start it. It never starts on the first try. When hot, it cranks… read more

Cruiser's 3375 with twin 454's, wiring is confusing. What gauge wires should go from alternators to isolator. Isolator to batteries(3). Switch to starter? Does the shore power from the inverter/conver… read more

A boat mechanic removed my battery for the winter and now I have 7 ringed terminals with no markings except one.so I need help in making sure I don't short something out. 1. RED that I traced it and i… read more

Hi I have a mercruiser 230 inboard 1982. just bought a new alternator. i'm clear with the positive and negative cables, but there are other 2 cables coming from the motor that go to a nut (one w a yel… read more

I have a 1989 Egg Harbor with 2 Mercruiser 454 inboards. I have had a continual problem with the neutral safety switch and had to giggle the shift lever to find the right position to start the boat. R… read more

Johnson 28 SPL 1989; OMC Throttle / Keyed Start Mechansim. Problem: Turn Key to start Engine, and I get nothing. This appears to be strictly an electrical problem. What I have done so far; 1) Checked … read more

Boat is a 1989 SEARAY Exp. Cruiser with 2 stock 454's. Both engines frequently have problems engaging the starters. Ignition solenoids (at front of valve covers) will "click" but not engage the starte… read more

I have a boat with a 1989 Chevy 454 engine. I have a 3 pole ignition (key) switch I would like to hook up near the engine so I can start and stop the engine (for winterizing the engine). If I hook up … read more

I have a 1989 90hp 3 cyl merc outboard I have only an internal wireing diagram and want to hook up a new ignition switch and guages "tach, volt, fuel". I have a new factory ignition switch and guages.… read more

1985 omc 3 litre: engine will not shut off! I replaced the ign. switch, same with new switch. I thought I had tracked it to the alt. because disconnecting the purple wire the engine would shut off. Re… read more

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.

JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.

I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

AlexLos Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

GPHesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

JustinKernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.

EstherWoodstock, NY

Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know.

RobinElkton, Maryland

He answered my question promptly and gave me accurate, detailed information. If all of your experts are half as good, you have a great thing going here.

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.